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Use the equation $y = r + 3$ to find the value of $y$ when $r = 2$ . $\newline$ $y =$ ____

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Find a value using two-variable equations

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Q. Use the equation

y = r + 3

to find the value of

y

when

r = 2

.

\newline

y =

____

Step $1$ : Substitute $r$ with $2$ : Step $1$ : We know that $r = 2$ . $\newline$ Plug in the value for $r$ in $y = r + 3$ . $\newline$ $y = r + 3$ $\newline$ Substitute $r$ with $2$ . $\newline$ $y = 2 + 3$
Step $2$ : Solve for y: Step $2$ : $y = 2 + 3$ . $\newline$ Solve for y. $\newline$ $y = 2 + 3 = 5$ .

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